Shuttle for sewing-machines.



W. H. TEH/VILLGEH.4

SHUTTLE FOR SEWING MACHINES.

APPLICATION FILI-:D IIIAY 29. I9I5.

@ashamed 3am, 15, QIZIS.

WIT/'1158858 f f man sacarse rainer ernten.

WILLIAM H. TERWILLIGER, or AMSTERDAM, NEW YORK, AssIeNoR To `:FREDERICK KLEIN, TRUSTEE.

SHUTTLE FOR SEWING-MACHINES.

To all fio/0m t may concern.'

Be it known that I, VILLIAM H. TER- wiLLIGEn, a citizen of the United States, and resident of Amsterdam, county of Montgomer, and State of New York, have `invented certain new and useful Improvements in Shuttles for Sewing-Machines, of which the following is a specification.

My invention relates more particularly to a shuttle for use in lock stitch sewing machines of the type described in Patent No. 1,049,430 to C. H. lWilkes, January `7, 1913. rlhis type of machine is particularly adapted for making stitch that is adapted to sew the glove fingers and other parts with a flat seam thereby producing what are called pique gloves. In this machine the parts of the glove to be sewed are supported upon a spindle or finger table small enough to enter the glove finger and the lock stitch is produced by drawing a loop of the needle thread through the spindle and turning it over a shuttle or looper located outside of and at the lower end of the spindle.

A reciprocatingthread hook is adapted to draw the needle thread through the spindle and into position to beintercepted by the shuttle hook, the latter then throwingthe loop to the opposite side so as to inclose the bobbin thread for forming the lock stitchin the usual manner.

In machines of this type it is preferable that the bobbin threadbetaken from the shuttle atthe rear in` orderrthvat it sha-ll not interfere with the thread hook.

lt isA also desirable, at times, to use a flat ball of thread in the shuttle instead of having the thread wound upon the usual bobbin spool thus saving somethinguin labor vand time which, ofcourse, enter as factors in the cost of production.

The object of my inventionis to produce a simple shuttle of the character indicated in which either ball thread or a b-obbin spool containingthread may be used Vas desired, means being provided for adjusting the ten sion in either case. A further object is to provide means for readily removing or inserting the bobbin or the-ball of thread in the looper or shuttle, this being `preferably accomplished by providing a. removable cover plate and means for locking it in place upon the body portion of thelooper.

One form or preferred construction of my 4Specification of Letters Patent.

gloves and produces a lock4 Patented Jan. 15, 1913..

Application led May 29, 1915. Serial No. 31,145.

improved shuttle is represented in the accompanying drawings of which Figure 1 shows parts of a glove sewing machine with the shuttle in place; Fig. 2 shows the shuttle separately, back view; Fig. 3 is an edge view looking toward the left in Fig. 2; Fig. 4 is a view similar to Fig. 2 but with the cover section removed; Fig. 5 is the cover section, inside view; Fig. 6 is an enlarged sectional view along the line 6-6 of Fig. 2; Fig. 7 is a secti-on (enlarged) on line 7-T of Fig. 2 and Fig. 8 is partial section (enlarged) on line S-S of Fig. 2.

Referring to the drawings 1 represents the table or bed of the sewing machine upon which is mounted a spindle 2, the top of which at 3 is adapted to support the goods being sewed, 4 is the needle rod and 5 is the needle carrying one of the threads 6 required to form the lock stitch. A bracket 7 is secured to the underside of the bed 1 and is adapted to support a thread hook guide 8 having mounted therein a reciprocating thread hook 9 the thread hook being adapted to be reciprocatcd through the spindle 2 to grasp Aa loop of the needle thread 6 formed when the needle 5 penetrates the goods and passes down into'the upper end of the spindle 2. After the thread hook 9 catches the loop of the needle thread it is drawn down to the position indicated in Fig. 1 of the drawings in which position 1t is adapted to be taken up by the hook 10 of theshuttle which carries the other thread 11 required to complete the lock stitch. The shuttle hook 10 is preferably formed integral with the shuttle member 12 and is slightly inclined thereto substantially as indicated in the drawings. The body of the hook member 12 is provided with a circular opening 13 which as indicated is eccentric of the outer bearing surface of the hook member. A portion of the outer periphery of the hook member forms a bearing surface whereby the shuttle is adapted to oscillate in a circular bearing Vat 14- in the bracket 7. The circular opening 13 on the front face of the hook member 12 is provided with an inwardly projecting :flange 15 adapted to assist in retaining the bobbin or flat ball of thread in place. The opposite face of the hook member 12 is-adapted to receive a cover member 16 which is provided with a recess 17 adapted to coincide with the circular ooenin 13 in the hoo member 12 to form a cavity or container for the bobbin 18 as shown 1n Fig. 6 or a llat ball of thread 19 as shown in Fig. 7 oit' the drawing. The cover member 16 and hook member 12 are adapted to be secured together.,v preferably by a lorm of bayonet joint consisting of two studs or pins 2O having heads adapted to enter buttonhole shaped recesses 21 in the body niember 12, the recesses 21 being undercut as indicated in Fig. (i so as to retain the two members in close engagement. It will be understood that to remove the cover member from the hook member it should be turned toward thelett as indicated in Fig. 2 Vof the drawings. Since the shuttle as a whole is oscillated in order to carry the needle thread loop over the bobbin thread in forming the locl stitch Vthe cover 1G is likely vto be displaced in the buttonhole slots 21. To avoid the possibility of this occurring I have provided a Vlocking bolt 22 the outer end ot which is adapted to enter a small hole 23 in the cover 1G and thus lock the cover meinber so that it cannot be rotated relative to the hook member during the normal operation of the shuttle. Wvhen it is desiredxto remove the cover. however, the bolt maybe pressed back against the action of the spring lf-lf so as to remove the end oi' the bolt `trom the hole 23 and then the cover can be turned toward the lett and separated from the hoolr member 12 so as to permit replacing the bobbin -or replenishing the supply ot thread in the shuttle.

The cover member 16 is preferablyv provided with two outlet holes. one hole 25, cen* tral of the recess 17, is adapted .for the passage ol2 the shuttle thread when a flat ball. oi thread is used and the other hole QG is adapted for use to withdraw the thread when a bobbin spool is used in the shuttle. The cover member 16 is also provided with a resilient tension or guide linger 27 secured to the-outer face thereof; by a screw 2S and provided with a hole at Z9 through which the shuttle thread is d awn from either oit the holes 25 or 2G. The hole 2S) is preferably7 located concentric of the shuttle or at the axis oit' oscillation thereof.

As will be seen in lligs.4 G. T and 8.,.the tension iinger 27 4is spaced from the outer recessed face of the cover member 1G and is located in the recess 30 on the outer face of the cover. r1`he spacebetwcen the tension linger 27 and the recessediace of the cover is preferably made adjustable so that the tension on the shuttle thread `may be varied as desired. This adjustment is obtained in the present instance by means of a set screw 31 (see Fig. 8) the point oi2 which is adapted to rest against the underside of the tension iinger 27 and by moving screw in or out it will be readily understood that the positionl of the outer end of the iin-y ger 27 may be varied. By this means the AV recess 3:2 is provided in one-edgefof cir-V cular 'opening 13 adjacent to the cover for the passage of the thread when a bobbin spool isV used.'Y

TheY operation of the shuttle will be nirderstood from the description ot' thedevice in view of the fact that the general method of forming a locl'stitch is well known but the present form of my device is particu-A larly adaptedto the glove sewing machines oi' the type hereinbefore reterred to. y

During the operation or' the machine Ithe bar 33 is adapted to be oscillated by suitable mechanism (not shown) and thereby oscillatc theshuttle so that the hook 10 removes the thread" loop from'the thread hoolr 9 ai'ter the same has been drawn Vdown the spindle '2. the beginning oi this operation being indicated in Fig. 1 of the drawings. rIhe sln'ittle is then oscillated about twothirds of a revolution and the loop is passed between the shuttle and the member'7 sliding off the end opposite the hook7 at'ter which the loop is free to be drawn up through the goods to form the lock stitch.

It will be understood that various modi ications of the speciic detail ot construction may be made without departing from the spirit and scope of the invention.V

I claim: Y Y

1. In a shuttle for lock stitch sewing ma chines, the combination of a loop hook member having slots, a cover element having pins adapted lto engage said vslots and lock therewith on axial rotation of said cover member. Y e

2. In a shuttle for lock stitch sewing niachines, the combination of a loop hooIt element having slots, a cover element having pins adapted to engage said slots-and means tolock said cover element in position.

3. In a shuttle for lock-stitch sewing machines7 the combination of a loop hook element recessed to receive the bobbin spool, a cover element having an aperture through which thel thread is adapted-to be drawn,V

said cover element having a` recess7 a tension device in said recess having a hole through which the threadV is passed and means bearing on the inner face ol` Said device or varying the tensionthereof.

4l.. In a shuttle for lock-stitch sewing machines, the combination cfa loop-hook member provided with a lianged circular opening arranged eccentrically to the bearing surface of said hook member having slots, a cover member provided with a recess adapted to coincide with the circular opening of said hook member, and having pins adapted to'locl with said slots whereby said coveris 'secured to said `hook member, and a resilient locking bolt for holding the cover in secured position. V

5. In a shuttle for look-stitch sewing machines, the combination of a loop hook member provided with a flanged circular opening arranged eccentrically to thc bearing surface of said hook member, a cover member provided with a recess adapted to coincide with the circular opening of said hook member, pin and slot means for securing said cover to 'said hook member and a locking bolt for holding the cover in secured position.

6. In a shuttle for lock-stitch sewing machines the combination of a loop hook member provided with a flanged circular opening arranged eccentrically to the bearing sui-tace of said hook member, a cover member provided with a recess adapted to coineide with the circular opening of said hook member, pin and slot means for securing said cover to said hook member, a locking bolt for holding the cover in secured position said cover being provided with a hole lfor the passage of the thread, a resilient linger secured to the outside of the cover and provided with a hole concentric of the shuttle, the thread being led from the hole in the cover through the hole in said finger and means for adjusting the position of said inger whereby the tension upon the thread may be varied.

7. In a 'shuttle for lock-stitch sewing machines the combination of a loop hook member provided with a circular opening having an annular flange at one face, a cover member adapted to be secured to the other face of said hook member, said cover being provided with a recess adapted to coincide with the circular opening of said hook member to iorm a cavity for the thread, the cover being provided with a hole through which the thread ma7 be drawn, a. tension guide finger on said cover, a resiliently mounted locking bolt for said cover and means for adjusting said finger to vary the tension on the thread.

8. As an article of manufacture, a shuttle for lock-stitch sewino' machines adapted for holding either a bo bin or a flat ball of thread, comprising a loop-hook member provided with a circular opening flanged at one edge, a cover provided with a recess adapted to coincide with the circular opening in said hook member, means for securing the cover to the hook member, said cover being provided with a hole central of said cover re-l cess for the thread to pass through when using a flat ball, and with a marginal hole for the thread to pass through when using a bobbin in said shuttle, a tension linger on said cover having a hole concentric oi' the shuttle through which the thread from the shuttle is to be drawn and means Jfor adjusting the tension on said ringer.

l), As an article of manufacture a shuttle l'or lock-stitch sewing machines adapted for holding either a bobbin or a flat ball of thread, comprising a hook member, a recessed cover provided with a hole for the lmbbin thread and a hole for the ball thread, means for securing the cover to said hook member, means itor locking the cover from relative movement when so secured, a tension linger thread guide on said cover and means for regulating the tension thereof.

l0. As an article of manufacture, a shuttle for lock-stitch sewing machines adapted for holding either a bobbin or a iiat ball of thread, comprising a loop hook member having a circular opening, a cover provided with a recess adapted to coincide with the circular opening in said hook member, means for securing' the cover to the hook member, said cover being provided with a hole central of said cover recess for the thread to pass through when using` a flat ball, and with a marginal hole for the thread to pa'ss through when using a bobbin in said shuttle, a tension finger on said cover having a hole concentric of the shuttle through which the thread from the shuttle is to be drawn and means for adjusting the pressure of said nger.

In witness whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM IwI. TERVVILLIGER.

lVitnesses FREDERICK KLEIN,

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, D. G. 

